123156789

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{283}}^1$

素因数の和:386

約数の個数: 64

約数和(自身を含む): 212004864

約数和(自身を除く): 88848075

約数列:

[1, 3, 7, 17, 21, 23, 51, 53, 69, 119, 159, 161, 283, 357, 371, 391, 483, 849, 901, 1113, 1173, 1219, 1981, 2703, 2737, 3657, 4811, 5943, 6307, 6509, 8211, 8533, 14433, 14999, 18921, 19527, 20723, 25599, 33677, 44997, 45563, 62169, 101031, 104993, 110653, 136689, 145061, 254983, 314979, 331959, 344977, 435183, 764949, 774571, 1034931, 1784881, 2323713, 2414839, 5354643, 5864609, 7244517, 17593827, 41052263, 123156789]

約数ペア:

[(1, 123156789), (3, 41052263), (7, 17593827), (17, 7244517), (21, 5864609), (23, 5354643), (51, 2414839), (53, 2323713), (69, 1784881), (119, 1034931), (159, 774571), (161, 764949), (283, 435183), (357, 344977), (371, 331959), (391, 314979), (483, 254983), (849, 145061), (901, 136689), (1113, 110653), (1173, 104993), (1219, 101031), (1981, 62169), (2703, 45563), (2737, 44997), (3657, 33677), (4811, 25599), (5943, 20723), (6307, 19527), (6509, 18921), (8211, 14999), (8533, 14433)]